Improved clamp tor suspending pasteboard and other fabrics



s@ uii 51mm @anni EDl/VIN H. SAMPSON, OF BOSTON, IVIASSACHUSETTS.rlaren: Para: No. 84,909, am@ December 15, i868.

IIVIPROVED CLAMP FOR SUSPENDING- PASTEBOARD AND OTHER FABRICS.

The Schedule referred to in these Letters Patent and making part of thesame.

To all whom it may concern: A

Be itkuown that I, EDWINH. Samson, of Boston, in the county of Suffolk,and State of Massachusetts, have invented an Improved Clamp forsuspending Paste- Aboard, &c.,while being dried, of which thefollowingis a ill, clear, and exact description, reference being had tothe accompanying drawings, making part of this specification, in whichlFigures l and 2 are perspective views of my improved clamp.

' In the ordinary operation of drying pasteboard under cover, it hasbeen the custom to suspend it by clamps hung upon a wire extendinghorizontally across the drying-room, each clamp consisting of two jawsclosed to gether by'a spiral spring placed between them. These clampsrequire to be removed in order to attach them to the paste-board, afterwhich they are again hooked over the wire to suspend the pasteboard tilldry.

By this method much valuable time is lost, two persons-being generallyemployed, one to attach the clamps to the pasteboard, and the oth er tocarry it tothe wire, and hang it thereon.

In addition to this objection, the spring is liable to become weakenedto such a degree that the clamp is incapable of holding the pasteboard,and is rendered worthless. Y

To overcome the above-mentioned difficulties is the object of myinvention, which consists in a stationary and a movable jaw connected bya frame, which may be permanently secured in place, so that it is simplynecessary to carry the sheet under the clamp and insert its upperedgebetween the jaws, the movable jaw, after beingslightlypressed backby the entrance of the sheet, closing down by its own weight against thepasteboard, and'holding'it firmly as desired, the degree of pressureexerted by the movable jaw upon the sheet corresponding to the weight ofthe sheet to be suspended thereby.

To enable others skilled in the art to understand and use my invention,I will proceed to describe the manner iu which I have carried it out.

In iig. l of the said drawings, my improved clamp is shown in theposition it occupies when holding one end of asheet of pasteboardto bedried.

A. is the franie-work, consisting of a bent or bifurcated arm, the lowerend of' the portion, a, of which terminates in a iat stationary jaw, B,while the lower' end of the portion, b, lhas pivoted thereto, at c, amovable jaw, C, the inside, Il, of which, is serrated or notched,

in order that a firmer hold may be taken upon the sheet of pasteboard D,confined between the jaws.

The outer end of the movable jaw is provided with aprojection, e, toplace the finger thereon, 'when itis desired to 'throw the movable jawback from the pasteboard, to allow of its being removed when dry. (See2.)

gA pin or stop, f, projects from the side of the frame, and' preventsthe movable jaw C from being thrown back beyond a point where it wouldnot return to its closed position by its own weight after the pasteboardhas been removed.

The upper end oi'the frame A is recessed out for the reception of thehead of a screw, g, which is pivoted thereto at 71., so that when theclamps are screwed into the beams in the dryiugroom, they may yieldlaterally, to allow of the shrinkage of the sheet between them whendrying. t

By the employment of my improved clamp, one perton may in a ready andconvenient manner lift the wet pasteboard and carry it, by taking holdof its edges, to the row of clamps, when it is raised so as to enter itbetween the jaws of each of two contiguous clamps, each edge, as it isentered between the jaws of a clamp,

, causing the movable jaw to be throw-niback, after which it closes downupon the pasteboard, and binds it seourely against the stationary jaw.

Instead of attachingeach clamp permanently to the beam by means of ascrew, it -may be provided with a swivelling connection, or the upperend of a clamp Inay be provided with a hook or eye, to allow of itsbeing hunr u or removed should occasion re uire but I I 1. prefer theconstruction first described, as, by it, the

operation of suspending the sheets is much facilitated.

It is evident that my improved clamp, besides being employed for holdingpasteboard of leather, straw, 85o.,

may be used to advantage in holding other materials for drying, or forother purposes, without departing from the spirit of my invention. A v

Claim. Whatl claim as my invention, and desire to secure by LettersPatent, is I -The jaws B C and frame A, when combined and arrangedsubstantially as and for the purposes described.

EDWIN H. SAMPSON.

Witnesses: 1

N. W. STEARNS,

W. J. CAMBRIDGE.

